[Bug c++/21619] [4.0 regression] __builtin_constant_p(&"Hello"[0])?1:-1 not compile-time constant

["mark at codesourcery dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From mark at codesourcery dot com  2005-06-05 17:57 -------
Subject: Re:  [4.0 regression] __builtin_constant_p(&"Hello"[0])?1:-1
 not compile-time constant

mark at codesourcery dot com wrote:
> ------- Additional Comments From mark at codesourcery dot com  2005-06-05 17:35 -------
> Subject: Re:  [4.0 regression] __builtin_constant_p(&"Hello"[0])?1:-1
>  not compile-time constant
> 
> pinskia at gcc dot gnu dot org wrote:
> 
>>------- Additional Comments From pinskia at gcc dot gnu dot org  2005-06-05 17:30 -------
>>Mark this is fixed on the 4.0 branch, the middle-end part was PR 21595 and was commited to 4.0 
>>branch:
>>2005-05-27  Richard Guenther  <rguenth@gcc.gnu.org>
>>
>>        PR middle-end/21595
>>        * builtins.c (fold_builtin_constant_p): Handle
>>        &"string cst"[0] as constant.
>>
>>And the testcase here works now.
>>
>>Were you using an old branch to test on?

That was exactly the problem; I've now checked in the testcase and will 
close the PR.

Thanks!



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21619